Experimental implementation of a Raman-assisted six-quanta process

S. O. Mundhada 1 A. Grimm 1 J. Venkatraman 1 Z. K. Minev 1 S. Touzard 1 N. E. Frattini 1 V. V. Sivak 1 K. Sliwa 1 P. Reinhold 1 S. Shankar 1 Mazyar Mirrahimi 2 M. H. Devoret 1
2 QUANTIC - QUANTum Information Circuits
MINES ParisTech - École nationale supérieure des mines de Paris, ENS Paris - École normale supérieure - Paris, SU - Sorbonne Université, Inria de Paris
Abstract : Fault tolerant quantum information processing requires specific nonlinear interactions acting within the Hilbert space of the physical system that implements a logical qubit. The required order of nonlinearity is often not directly available in the natural interactions of the system. Here, we experimentally demonstrate a route to obtain higher-order nonlinearities by combining more easily available lower-order nonlinear processes, using a generalization of the Raman transitions. In particular, we demonstrate a Raman-assisted transformation of four photons of a high-Q superconducting cavity into two excitations of a superconducting transmon mode and vice versa. The resulting six-quanta process is obtained by cascading two fourth-order nonlinear processes through a virtual state. This process is a key step towards hardware efficient quantum error correction using Schr\"odinger cat-states.
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Contributor : Mazyar Mirrahimi <>
Submitted on : Tuesday, November 27, 2018 - 3:25:23 PM
Last modification on : Tuesday, May 14, 2019 - 10:16:34 AM

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  • HAL Id : hal-01936696, version 1
  • ARXIV : 1811.06589


S. O. Mundhada, A. Grimm, J. Venkatraman, Z. K. Minev, S. Touzard, et al.. Experimental implementation of a Raman-assisted six-quanta process. 2018. ⟨hal-01936696⟩



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